package gov.privacy.service;

/*-
 * #%L
 * ACM Privacy: Subject Access Request
 * %%
 * Copyright (C) 2014 - 2020 ArkCase LLC
 * %%
 * This file is part of the ArkCase software. 
 * 
 * If the software was purchased under a paid ArkCase license, the terms of 
 * the paid license agreement will prevail.  Otherwise, the software is 
 * provided under the following open source license terms:
 * 
 * ArkCase is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *  
 * ArkCase is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with ArkCase. If not, see <http://www.gnu.org/licenses/>.
 * #L%
 */

import static gov.privacy.model.SARUtils.extractRequestorEmailAddress;

import com.armedia.acm.plugins.ecm.dao.EcmFileDao;
import com.armedia.acm.plugins.ecm.model.EcmFile;
import com.armedia.acm.plugins.ecm.model.EcmFileVersion;
import com.armedia.acm.services.templateconfiguration.model.Template;
import com.armedia.acm.services.templateconfiguration.service.CorrespondenceTemplateManager;
import com.armedia.acm.services.templateconfiguration.service.TemplatingEngine;
import com.armedia.acm.services.notification.dao.NotificationDao;
import com.armedia.acm.services.notification.model.Notification;
import com.armedia.acm.services.notification.service.NotificationSender;
import com.armedia.acm.services.users.dao.UserDao;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.core.io.Resource;

import java.io.DataInputStream;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.Arrays;
import java.util.Objects;

import gov.privacy.dao.SARDao;
import gov.privacy.model.SARConstants;
import gov.privacy.model.SARDocumentDescriptor;
import gov.privacy.model.SubjectAccessRequest;

/**
 * @author Vladimir Cherepnalkovski <vladimir.cherepnalkovski@armedia.com> on Jun, 2020
 *
 */
public class AcknowledgementDocumentService
{
    private Logger log = LogManager.getLogger(getClass());
    private NotificationSender notificationSender;
    private UserDao userDao;
    private EcmFileDao ecmFileDao;
    private SARDao requestDao;
    private SARDocumentGeneratorService documentGeneratorService;
    private DocumentGenerator documentGenerator;
    private SARConfigurationService SARConfigurationService;
    private SARQueueCorrespondenceService SARQueueCorrespondenceService;
    private String emailBodyTemplate;
    private TemplatingEngine templatingEngine;
    private NotificationDao notificationDao;
    private CorrespondenceTemplateManager templateManager;

    public void emailAcknowledgement(Long requestId)
    {
        SubjectAccessRequest request = getRequestDao().find(requestId);
        if (Objects.isNull(request.getPreviousQueue()))
        {
            String emailAddress = extractRequestorEmailAddress(request.getOriginator().getPerson());
            if (emailAddress != null && !emailAddress.isEmpty())
            {
                SARDocumentDescriptor documentDescriptor = documentGeneratorService.getDocumentDescriptor(request, SARConstants.ACK);
                EcmFile letter = getEcmFileDao().findForContainerAttachmentFolderAndFileType(request.getContainer().getId(),
                        request.getContainer().getAttachmentFolder().getId(), documentDescriptor.getDoctype());

                EcmFileVersion ecmFileVersion = letter.getVersions().stream()
                        .filter(fv -> fv.getVersionTag().equals(letter.getActiveVersionTag())).findFirst().get();

                String emailSubject = "";
                Template template = templateManager.findTemplate("requestDocumentAttached.html");
                if (template != null)
                {
                    emailSubject = template.getEmailSubject();
                }
                Notification notification = new Notification();
                notification.setTemplateModelName("requestDocumentAttached");
                notification.setEmailAddresses(emailAddress);
                notification.setAttachFiles(true);
                notification.setFiles(Arrays.asList(ecmFileVersion));
                notification.setParentId(requestId);
                notification.setParentType(request.getObjectType());
                notification.setTitle(String.format("%s %s", request.getRequestType(), request.getCaseNumber()));
                notification.setUser(request.getCreator());
                notification.setSubject(emailSubject);
                notificationDao.save(notification);
            }
        }
    }

    public void generateAndUpload(String objectType, Long requestId) throws DocumentGeneratorException
    {
        SubjectAccessRequest request = getRequestDao().find(requestId);
        if (Objects.isNull(request.getPreviousQueue()))
        {
            SARQueueCorrespondenceService.handleRequestReceivedAcknowledgementLetter(requestId);
            SARQueueCorrespondenceService.handleRequestResponseLetter(requestId);
        }
    }

    public void generateAndUploadACK(Long requestId) throws DocumentGeneratorException

    {
        SubjectAccessRequest request = requestDao.find(requestId);
        SARDocumentDescriptor documentDescriptor = documentGeneratorService.getDocumentDescriptor(request, SARConstants.ACK);
        String arkcaseFilename = String.format(documentDescriptor.getFilenameFormat(), request.getId());
        String targetFolderId = request.getContainer().getAttachmentFolder() == null
                ? request.getContainer().getFolder().getCmisFolderId()
                : request.getContainer().getAttachmentFolder().getCmisFolderId();
        documentGenerator.generateAndUpload(documentDescriptor, request, targetFolderId, arkcaseFilename,
                documentGeneratorService.getReportSubstitutions(request));
    }

    public NotificationSender getNotificationSender()
    {
        return notificationSender;
    }

    public void setNotificationSender(NotificationSender notificationSender)
    {
        this.notificationSender = notificationSender;
    }

    public UserDao getUserDao()
    {
        return userDao;
    }

    public void setUserDao(UserDao userDao)
    {
        this.userDao = userDao;
    }

    public EcmFileDao getEcmFileDao()
    {
        return ecmFileDao;
    }

    public void setEcmFileDao(EcmFileDao ecmFileDao)
    {
        this.ecmFileDao = ecmFileDao;
    }

    public SARDao getRequestDao()
    {
        return requestDao;
    }

    public void setRequestDao(SARDao requestDao)
    {
        this.requestDao = requestDao;
    }

    public SARDocumentGeneratorService getDocumentGeneratorService()
    {
        return documentGeneratorService;
    }

    public void setDocumentGeneratorService(SARDocumentGeneratorService documentDescriptorService)
    {
        this.documentGeneratorService = documentDescriptorService;
    }

    public DocumentGenerator getDocumentGenerator()
    {
        return documentGenerator;
    }

    public void setDocumentGenerator(DocumentGenerator documentGenerator)
    {
        this.documentGenerator = documentGenerator;
    }

    public SARConfigurationService getSARConfigurationService()
    {
        return SARConfigurationService;
    }

    public void setSARConfigurationService(SARConfigurationService SARConfigurationService)
    {
        this.SARConfigurationService = SARConfigurationService;
    }

    public SARQueueCorrespondenceService getSARQueueCorrespondenceService()
    {
        return SARQueueCorrespondenceService;
    }

    public void setSARQueueCorrespondenceService(SARQueueCorrespondenceService SARQueueCorrespondenceService)
    {
        this.SARQueueCorrespondenceService = SARQueueCorrespondenceService;
    }

    public String getEmailBodyTemplate()
    {
        return emailBodyTemplate;
    }

    public void setEmailBodyTemplate(Resource emailBodyTemplate) throws IOException
    {
        try (DataInputStream resourceStream = new DataInputStream(emailBodyTemplate.getInputStream()))
        {
            byte[] bytes = new byte[resourceStream.available()];
            resourceStream.readFully(bytes);
            this.emailBodyTemplate = new String(bytes, Charset.forName("UTF-8"));
        }
    }

    public TemplatingEngine getTemplatingEngine()
    {
        return templatingEngine;
    }

    public void setTemplatingEngine(TemplatingEngine templatingEngine)
    {
        this.templatingEngine = templatingEngine;
    }

    public NotificationDao getNotificationDao()
    {
        return notificationDao;
    }

    public void setNotificationDao(NotificationDao notificationDao)
    {
        this.notificationDao = notificationDao;
    }

    public CorrespondenceTemplateManager getTemplateManager()
    {
        return templateManager;
    }

    public void setTemplateManager(CorrespondenceTemplateManager templateManager)
    {
        this.templateManager = templateManager;
    }
}